At a guess this is due to a miss match between the datavalue of a property and the datavalue that you are trying to set in a statement for that property.
The error also says that it gets an array where it expects a string so I guess the issue is with P251 where the value is an array instead of a string! Could P251 possibly be a string? On 10 August 2015 at 14:25, Bo Ferri <[email protected]> wrote: > Hi all, > > (apologies, if this is not the right place for raising the following issue > (if this is the case, then please delegate me to a more appropriated place > ;) )) > > we are currently evaluating Wikibase as storage for D:SWARM GDM data (see > [1,2]). Right now, we have a prototype client [3] that makes use of a > Wikidata Toolkit fork [4]. So far, we were able to write/create simple > items and properties. However, we also would like to create new items with > a given set of statements. Therefore, we intended to utilise the > 'wbeditentity' HTTP API (and I had (and still have) a lively conversation > with Markus Krötzsch about this topic, see [5]). We get (a kind of) item > JSON serialisation (e.g. with help of JacksonObjectFactory-based > DatamodelConverter (Wikidata Toolkit code)). However, when sending this to > the 'webeditentity' API we always receive an error response like this: > > " > { > "error": { > "code": "modification-failed", > "info": "array instead of string", > "messages": [ > { > "name": "wikibase-validator-bad-type", > "parameters": [ > "string", > "array" > ], > "html": { > "*": "array instead of string" > } > } > ], > "*": "See http://[OUR WIKIBASE SERVICE IP]/api.php for API usage" > } > } > " > > We cannot really interpret what's wrong with the data model that we send > to this API (note: we make use of the POJOs below > 'org.wikidata.wdtk.datamodel.json.jackson' package of Wikidata Toolkit, see > [6]). An example of a data JSON is attached to this e-mail. > > Thanks a lot in advance for all your help. > > Cheers, > > > Bo/T > > > [1] http://dswarm.org > [2] https://github.com/dswarm/dswarm-documentation/wiki/Graph-Data-Model > [3] > https://github.com/zazi/wikidata-d-swarm-importer/tree/own_mediawiki_api_client > [4] > https://github.com/zazi/Wikidata-Toolkit/tree/wikibase_api_write_modifications > [5] https://github.com/Wikidata/Wikidata-Toolkit/issues/162 > [6] > https://github.com/zazi/wikidata-d-swarm-importer/blob/own_mediawiki_api_client/src/main/java/org/dswarm/wikidataimporter/WikibaseAPIClient.java#L368 > > _______________________________________________ > Wikidata-tech mailing list > [email protected] > https://lists.wikimedia.org/mailman/listinfo/wikidata-tech > > -- Addshore
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